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| author | William Breathitt Gray <william.gray@linaro.org> | 2022-12-27 17:09:40 +0300 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2023-01-30 17:55:27 +0300 |
| commit | 2f7e845f512fdcdafdc922f23a91e560ef33ce4a (patch) | |
| tree | 870282f50fefed3017105e164bcca5b7ae00aa39 /drivers/gpio/Kconfig | |
| parent | 8978277c229b9502aba4654b1d6ec59c819e82ea (diff) | |
| download | linux-2f7e845f512fdcdafdc922f23a91e560ef33ce4a.tar.xz | |
gpio: 104-dio-48e: Migrate to the regmap-irq API
The regmap API supports IO port accessors so we can take advantage of
regmap abstractions rather than handling access to the device registers
directly in the driver.
For the 104-dio-48e we have the following IRQ registers (0xB and 0xF):
Base Address +B (Write): Enable Interrupt
Base Address +B (Read): Disable Interrupt
Base Address +F (Read/Write): Clear Interrupt
Any write to 0xB will enable interrupts, while any read will disable
interrupts. Interrupts are cleared by a write to 0xF. There's no IRQ
status register, so software has to assume that if an interrupt is
raised then it was for the 104-DIO-48E device.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'drivers/gpio/Kconfig')
| -rw-r--r-- | drivers/gpio/Kconfig | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index ec7cfd4f52b1..2f8cb03bd975 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -845,6 +845,8 @@ config GPIO_104_DIO_48E tristate "ACCES 104-DIO-48E GPIO support" depends on PC104 select ISA_BUS_API + select REGMAP_MMIO + select REGMAP_IRQ select GPIOLIB_IRQCHIP select GPIO_I8255 help |